Unforgettable auntie blowjob

We were on vacation in a small house by the sea and our nephew asked us if he could stay with us for a week. He had just turned 18 years old, we decided to let him lie down in a bed next to us since we had no other possibilities. As usual in the summer I dressed in mini dresses and without a bra, especially at home, on the beach I would sunbathe topless even when he was with us. I have often seen him try to hide his erection from me but I thought it was normal at that age to get aroused easily. He was a guy with a great body but very shy and therefore he couldn't make friends and spent a lot of time with us, the only problem was that with him around we couldn't have sex, for 4 days nothing .... The fifth night my husband couldn't take it anymore and he started putting his hand in my panties hoping that I would return the favor, all this while we were careful not to make the slightest noise. Well, for me too it had been many days and I was so wet that I no longer thought that there was my nephew next to me, i took his huge boner in my hand and started jerking it off. But I didn't want it to end like this, so I lay on my side and turned my back towards my husband so that he could fill me from behind. And so he did... He pumped me and I moaned with pleasure, being careful not to make too much noise but it wasn't like that. When I looked at my nephew I noticed a nice hard-on under the sheet... oh my god, he was pretending not to see! By now I was enjoying and I didn't care anymore, even today I don't know what snapped in my head but I stretched out my hand until I touched that boner. It made me feel good to think that that fit young boy was getting aroused for me, much older than him. And he kept pretending to be asleep while his throbbing erection in my hand said otherwise... My husband also understood everything and started to pump harder to make me cum, I could no longer restrain myself and moaned louder, it was the first time that something like this had happened to us and we hadn't prepared it. So pounded up I was getting closer and closer to my nephew, my face getting closer to his cock that I was rubbing, and he kept pretending... Well, so I decided to take off that sheet and welcome his boner into my mouth, so that he could well see his dear aunt sucking him off. I just had time to slide it up and down twice that I felt it shake and explode in my mouth so hard I swallowed it all. This gave me a shiver in my clitoris and I came so hard that my husband also cum inside me. For me it was a pleasant feeling to have had a great orgasm and find myself with my mouth and pussy filled at the same time but the strangest thing was that in the end I put my nephew's cock back in his panties, I had blown him so well that I cleaned it up, I pulled up the sheet and he never opened his eyes . Even today we never talked about it with him, as if it never happened ...